Plaster-board.



Specification of Letters Patent. Appueaammea ianuary e, isos. serial No. 409,167.

Patented Feb. 2, 1909.

To all whom it may concern:

Be it known that I, LINcoLN FIsnAoK, a citizen of the UnitedStates, residing at Toledo, State of Ohio, have invented new and'useful Improvements in Plaster-Boards,

. of which the following is a specication.

My invention relates to plaster boards .I which are furnished as com leted units and are secured to partition an other walls by nailing or in any other convenient Way. The finish coating of plaster is applied to the boards instead of to the customary rough plastering carried by lathing. I

In the accompanying drawing is shown an exemplification of my invention. Figure 1 is a front view of a plaster board with a part of the stucco broken away 'showing the fabric reinforcement; Fig. 2 is a trans- 1 y verse section on the line 2 2, Fig. 1, and,

Fig. is an enlargementof a transverse section;

base of the board'. This is conveniently of cloth corrugated as shown. .The cloth may be sized or otherwise stiffened, if it is necessary, lt0 retain the corrugations during manufacture of the board.` A layerof stucco 3 is laid on eachv side cof the fabric, The fabric is layertof stucco.

provided with suitably arranged perforations .4 throughl which the stucco passes,`

forming bonds which firmly join the two layers of stucco and securely unite the wholeboard- The boards are conveniently made in atsbottomed molds and to prevent the stucceffsticking tothe mold, a sheet of aper is ufia'afily placed thereon before the ower layer 4of stucco is ypopredwin. This'layer ofpaper 5 adheres tof the babliof the 'completed oard'. Anothersheet of'paper 6 is placed uponV and adherest-o thesurface ofthe outer soft "the slieet of paperf is given indentations c7 zi-`anysuitable manner and in any: desired These' indentations unite' lthe pg er securely with the stucco. and also provi ipe an excellent holding surface for the plaster which is to be applied to the board. he layers of pa r 5, 6, one o n each side of the board complbely cover the stucco and preventchipping or crumbling and in addi@l tionmaterially strengthen the board. fr,

Instead of stucco any other suitable lastic material which ma readily be handle when soft and which wil set in a reasonable time and which when dry may be sawed and other- Reference numeral 1 'designates the fabricv faces for While the stucco is'still,

wise operated upon without splitting, may be. em' loyed.

he-boards may be furnished in various sizes vand are of such nature that they can easily be nailed in place on the wall frames without splitting or crumbling. The boards may be readily sawed to any dimensions required. The fabricv base 1 serves as a binder to hold the entire board together; its corrugated form stiffens the board, enablingv aI ighter'board to be used than might otherwise-be possible. These plaster boards are slow burning, waterlproof, vermin-proof and to a large extent-sound proof.

, My p aster-board is a substitute for wood lath and can beplastered over with a brown mortar' coat, when dried, is then in shape to;- receive the finishing coat. But, of courseL my board is applicable to all other uses o which it is capable.

I prefer to make the indentations in rec- .f

tangular form in order to key seat for the plaster.

I claim y y V V 1. A plaster-board constructed as an inde-- pendent unit thaving generally flat sides and comprising a uniformi corrugated non-me. tallic fabric base and a lra'yer of stucco on eaclg side of the basein contact with the basetthrou hout its'whole surface.

2. plaster board comprising a uniformly corrugated fabric base provided with peny forations, a layer of stucco on each side ofI the fabricna'nd in contact with substantiallyv the entirel surface of the base, the layers beprovide an angular sii ing'bonded together through the perfora. 1:.3

tions, and a layer of paper on the surface of one of the stucco layers, the pa er being inf dented-into the stucco to formiolding surlasten' p 3. A plaster board comprising a uniformly corrugated fabric base provided with perforations, a layer of stucco on each side of i the fabric, an"d-in contact with the fabric throughouttit's entire surface, the layers vbeing bonded together "through the perfora-v tions, and a layer of paper on the surface of .one ofthe stucco layers, the pa er being iniol dented into the stucco so as to orm recesses with squared sides to receive plaster.

LINCOLN E. FIJSHACK.

lWitnesses:

' .J. A. FLUCKEY,

RH. SPENCER. 

